A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite side of Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower?

• A. 90
• B. 45√3
• C. 45(√3 + 1)
• D. 45(√3 + 2)